This system presents the monitoring and control of real time data acquisition of a solar power system in reliance SCADA. SCADA (supervisory control and data acquisition) systems are currently employed in many applications, such as home automation, greenhouse automation, and hybrid power systems. Commercial SCADA systems are costly to set up and maintain; therefore those are not used for small renewable energy systems. This system demonstrates applying Reliance SCADA and Arduino Uno on a small photovoltaic (PV) power system to monitor the current, voltage, of the PV and battery and also control the load from SCADA. The designed system uses low-cost sensors, an Arduino Uno microcontroller, and free Reliance SCADA software. The Arduino Uno microcontroller collects data from sensors and communicates with a computer through a USB cable. Uno has been programmed to transmit data to Reliance SCADA on PC. In addition, Modbus library has been uploaded on Arduino to allow communication between the Arduino and our SCADA system by using the MODBUS RTU protocol. The results of the experiments demonstrate that SCADA works in real time and can be effectively used in monitoring a solar energy system.
Current Sensor, Voltage Sensor, Solar PV System, Reliance SCADA
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